COBEC0011S <x> is not a valid EXEC Type

The word <x> which immediately followed the EXEC word is not recognized as a valid EXEC type. The preprocessor will recognize CICS, DLI, and SQL as valid types.
Restriction: This topic applies only when the Enterprise Server feature is enabled.
System Action:
The EXEC statement is treated as comments, a SEVERE error is raised, and processing continues with the word following the END-EXEC.
Resolution:
Correct the source. If this EXEC type should be handled by another preprocessor, make that preprocessor run before (closer to the source) than the TX preprocessor.
Module:
cicsprep (dfhxc2pp)
Destination:
Source Listing, .TRL file, STDOUT